#include <bits/stdc++.h>
#define IOS ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define endl "\n"
using namespace std;
typedef long long ll;
int main()
{
    IOS;
    //freopen(".in", "r", stdin);
    //freopen(".out", "w", stdout);
    return 0;
}
